Injector magazine for injector razor blades



March 24, 1964 1 B, KRUGER ETAL 3,126,126

INJECTOR MAGAZINE FOR INJECTOR RAZOR BLADES Filed Jan. 5, 1962 :f: FIG. 5

TAMES B. KRUGER ROBERT L. BORDEAU ATTORNEY United States Patent O 3,126,126 INJECTOR MAGAZINE FOR INJECTOR RAZQR BLADES .lames B. Kruger and Robert L. Boi-dean, Staunton, Va., assignors to Philip Morris Incorporated, New York, NSY., a corporation of Virginia Filed Jau. 3, 1962, Ser. No. 164,103 3 Claims. (Cl. 221-102) Various expedients have been resorted to in the provision of magazines for dispensing the thin single-edge razor blades such as used in injector razors. optimally, these should be compact, sturdy, light-weight, and of a pleasing appearance, should be easily and effectively operable and free from annoyance in operation, should eject each blade with a slight bias toward its dull edge, should provide a chamber into which used blades may be inserted, and should be so inexpensive in construction that they can be discarded after the stack of blades therein have been used.

With the foregoing and other considerations in View, the present invention provides a highly effective injector magazine which is economical of construction, and which embodies, in various of its aspects, various of the desiderata enumerated above; and there is exemplified herein an injector magazine embodying such desiderata.

The invention accordingly comprises an article of manufacture possessing the features, properties, and the relation of elements which will be exemplified in the article hereinafter described and the scope of the application of which will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings, in which:

FIGURE 1 is a top view of one form of magazine embodying the invention;

FIG. 2 is a partly sectional view from one side thereof showing a blade in the process of ejection;

FIG. 3 is a view from the opposite side showing the parts in the position of FIG. 2;

FIG. 4 is a section along the line 4--4 of FIG. 2; and

FIG. 5 is a section along the line 5-5 of FlG. 2.

In the exemplified form of construction, there is provided a metallic casing 5 comprising a side wall 6 from the forward end of which there projects forwardly the usual injector key 7 having the usual protuberances 8 and 9, a bottom wall 10, and a side wall 11 carrying at its forward end a tab which is bent obliquely at 12 and then transversely at 13 to provide a front wall one end of which is integral with the side wall 11 and the other end of which is juxtaposed to the forward end of the side wall 6. The wall 6 carries at its upper end an inwardly-extending ap 14 and the wall 11 carries at its upper end an inwardly-extending iiap 15 which, together, provide a top wall with a longtiudinal slot 16 between the flaps. The upper end of the tab portions 12 and 13 are disposed just enough below the flaps 14 and 15 to provide a slot 13 thru which one blade at a time may be jected from the magazine.

An ejection slider 20 rides in the slot 16 between a rearmost position wherein a lug 21 contacts a stop 22 and a forward position wherein the lug 21 contacts a stop 23. The slider comprises a blade-ejecting element 25, which is formed to engage only the uppermost blade of a stack, and the forward edge 26 of which slopes slightly rearwardly toward the side 6 so as to tend to bias, toward the plane of the inner wall of the side 6, the forward end of a blade engaged thereby so as to avoid any tendency for the blade to work forward during ejection to a 3,126,126 Patented Mar. 24, 1964 2 point where its cutting edge will contact the blade stops on the razor head into which it is being ejected.

A stack 30 of injector blades 31 is disposed within the top of the casing, with the uppermost blade against the top wall and in line with the slot 18 and the next blade below it in line with the upper part of the tab portion 13, and with -the rear end `of the stack just forward of the end 26 of the slider when the latter is in its rearmost position. The dull edges 33 of the blades are disposed against the side 6, and the sharp edges 34 thereof are spaced from the side 11. The corners of the blades are diagonally cut away as shown, the corners 36 of all blades except the uppermost one lying in contact with the inner wall of the oblique tab portion 12. The side wall 6 is formed with a window 37 for viewing the blades.

The sides 6 and 11 and the tab portions 12 and 13 are made deep enough to provide beneath the stack of blades a chamber 38 into which used blades may be inserted through a slot 39 in the bottom wall 10.

Pursuant to the invention in certain of its aspects, the blade stack is pressed against the top of the casing, and used blades are retained in the chamber 38 by means of an assembly 4t) composed of thin resilient sheet metal and comprising a bridge portion 42 extending across a central portion of the casing and supported by a downwardlywidening leg i4 which lies against the side wall 6 and a downwardly-widening leg 45 which lies against the side wall 11. The legs a're centrally reinforced by inward bends 46. From the forward and rearward ends of the bridge 42 there extend spring arms 47 and 48 the free end portions of which engage the bottom of the stack 30 and urge it upwardly, and the terminal ends of which are bent slightly downwardly to facilitate assembly. The forward corner of the spring arm 47 nearest the wall 11 is cut away as indicated at 5t), and the rearward corner of the spring arm 4S nearest the side 6 is cut away as indicated at 51.

Rearward movement of the blades of the stack is prevented by a spring clip 55 of thin resilient sheet metal and comprising a portion 56 which lies against the side wall 6, a forward portion 57 engaging the rear ends of all the blades except the uppermost blade, but cut away at 53 to permit the blade ejecting element 25 to pass thereover, a forwardly-bent portion 59 providing an inclined surface 60 adapted to engage the cut-away corners 61 of all the blades in the stack, and an outwardly-urged portion 62 which presses against the side wall 11 and which has a bent-out lug 63 adapted to engage in an opening 64 in the side 11 providing latch means to prevent the rearward movement of the clip 55 after insertion. In accordance with the present invention in certain of its aspects, the clip is also formed with a tail portion 65 providing a rear wall for the casing. The portion 65 is integral with the portion 56 and extends laterally to the side wall 11 and downwardly to the bottom wall 10, providing a rear wall for the chamber 38. At its lower end it is bent forwardly to provide a portion 66 lying above the bottom wall 1t). The portion 66 is formed with a downwardlybent lug 67 to provide latch means giving additional assurance against rearward movement of the clip 55.

Since certain changes may be made in the above article and different embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

We claim:

1. An injector magazine comprising a casing having side walls defining an upper portion containing a stack of razor blades and a lower portion providing a used-blade compartment, a top wall formed with a longitudinallyextending slot, a bottom wall formed with a used-blade entrance slot, and a front wall; a forwardly-extending injector key carried by said casing; means dening a blade exit slot in the upper forward end of said casing; a slider riding in said longitudinal slot for ejecting the uppermost blade of said stack through said exit slot; a spring for urging said stack of blades upwardly; and supporting means for said spring and integral therewith and comprising uprights disposed forwardly of said used-blade entrance slot and resting on said bottom wall and disposed at the sides of said used-blade compartment interiorly of said side walls; wherein there is provided at the rear of said blade stack a spring clip comprising a generally U- shaped portion closed at its forward end and provided with rearwardly-extending outwardly-resilient spaced arms and disposed in the rear of said upper portion of the casing with said arms resiliently engaging the side walls ofthe casing and with said forward end engaging and alining said stack of blades and an integral rearward portion extending from the rear of one of said arms across the rear of said casing at the rear of and downwardly below said U-shaped portion to close the entire rear of said casing and to provide a rear wall for said used blade compartment.

2. An injector magazine comprising a casing having side walls defining an upper portion containing a stack of razor blades and a lower portion providing a yused-blade compartment, a top wall formed with a longitudinallyextending slot, a bottom wall, and a front wall; a forward- 4 ly-extending injector key carried by said casing; means defining a blade exit slot in the upper forward end of said casing; means dening a used-blade entrance slot; a slider riding in said longitudinal slot for ejecting the uppermost blade of said stack `through said exit slot; and a sheetmetal spring clip comprising a generally U-shaped portion closed at its forward end and provided with rearwardlyextending outwardly-resilient spaced arms and disposed in the rear of said upper portion of the casing with said arms resiliently engaging the side Walls of the casing and with said forward end engaging and alining said stack of blades and an integral rearward portion extending from the rear of one of said arms across the rear of said casing at the rear of and downwardly below said U-shaped portion to close the rear of said casing and to provide a rear t Wall for said used blade compartment.`

3. A magazine as in claim 2 wherein said forward end has a forwardly-extending blade-aligning bend adjacent the other of said arms.

References Cited in the le of this patent UNITED STATES PATENTS 

1. AN INJECTOR MAGAZINE COMPRISING A CASING HAVING SIDE WALLS DEFINING AN UPPER PORTION CONTAINING A STACK OF RAZOR BLADES AND A LOWER PORTION PROVIDING A USED-BLADE COMPARTMENT, A TOP WALL FORMED WITH A LONGITUDINALLYEXTENDING SLOT, A BOTTOM WALL FORMED WITH A USED-BLADE ENTRANCE SLOT, AND A FRONT WALL; A FORWARDLY-EXTENDING INJECTOR KEY CARRIED BY SAID CASING; MEANS DEFINING A BLADE EXIT SLOT IN THE UPPER FORWARD END OF SAID CASING; A SLIDER RIDING IN SAID LONGITUDINAL SLOT FOR EJECTING THE UPPERMOST BLADE OF SAID STACK THROUGH SAID EXIT SLOT; A SPRING FOR URGING SAID STACK OF BLADES UPWARDLY; AND SUPPORTING MEANS FOR SAID SPRING AND INTEGRAL THEREWITH AND COMPRISING UPRIGHTS DISPOSED FORWARDLY OF SAID USED-BLADE ENTRANCE SLOT AND RESTING ON SAID BOTTOM WALL AND DISPOSED AT THE SIDES OF SAID USED-BLADE COMPARTMENT INTERIORLY OF SAID SIDE WALLS; WHEREIN THERE IS PROVIDED AT THE REAR OF SAID BLADE STACK A SPRING CLIP COMPRISING A GENERALLY USHAPED PORTION CLOSED AT ITS FORWARD END AND PROVIDED WITH REARWARDLY-EXTENDING OUTWARDLY-RESILIENT SPACED ARMS AND DISPOSED IN THE REAR OF SAID UPPER PORTION OF THE CASING WITH SAID ARMS RESILIENTLY ENGAGING THE SIDE WALLS OF THE CASING AND WITH SAID FORWARD END ENGAGING AND ALINING SAID STACK OF BLADES AND AN INTEGRAL REARWARD PORTION EXTENDING FROM THE REAR OF ONE OF SAID ARMS ACROSS THE REAR OF SAID CASING AT THE REAR OF AND DOWNWARDLY BELOW SAID U-SHAPED PORTION TO CLOSE THE ENTIRE REAR OF SAID CASING AND TO PROVIDE A REAR WALL FOR SAID USED BLADE COMPARTMENT. 